c++ final exam 2017/2018 · c++ final exam 2017/2018 page 4 of 18 #nashama_bau @nashamabau 13) the...

C++ Final Exam 2017/2018

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1) All of the following are examples of integral data types EXCEPT ______.

o A Double

o B Char

o C Short

o D Int

2) After the execution of the following code, what will be the value of numb if the input value is 5?

1. cin >> numb;

2. if (numb > 0)

3. numb = numb + 10;

4. else

5. if (numb > 5)

6. numb = numb + 15;

o A 0

o B 5

o C 25

o D 15

3) What type of C++ statement(s) stores a value in a variable?

o A both input and assignments

o B assignments

o C output

o D input

4) Which of the following is NOT a reserved word in C++?

o A return B int C const D num

5) What is the output?

1. int n = 0;

2. cout << ((n) ? n++ : ++n);

o A 0

o B 1

o C None of these

o D 2

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1. int x = 5;

2. cout<< (x++)+x<<endl;

o A 11

o B 10

o C None of these

o D 12

7) What is the output of the following code?

1. if ( 6 > 8)

2. {

3. cout << " ** " << endl ;

4. cout << "****" << endl;

5. }

6. else if (9 == 4)

7. cout << "***" << endl;

8. else

9. cout << "*" << endl;

o A ****

o B ***

o C *

o D **

8) Which of these is a valid reserved word in C++?

o A Char B Include C Double D Const

o E None of these

9) Suppose that x, y, z, and w are int variables. The expression x(y+z)/w in C++ is written as

o A x * (y + z) / w

o B x * y + z / w

o C x * y + x * z / w

o D x (y + z) / w

10) The expression static_cast<int>(6.9) + static_cast<int>(7.9) evaluates to ____.

o A 14

o B 14.8

o C 13

o D 15



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11) Suppose that ch1, ch2, and ch3 are variables of the type char and the input is:

A B

C

**What is the value of ch3 after the following statements execute?

1. cin.get(ch1);

2. cin.get(ch2);

o cin.get(ch3);

o A 'B'

o B 'C'

o C 'A'

o D '\n'

12) Suppose x and y are int variables. Consider the following statements:

1. if (x > 5)

2. y = 1;

3. else if (x < 5)

4. {

5. if (x < 3)

6. y = 2;

7. else

8. y = 3;

9. }

10. else

11. y = 4;

**What is the value of y if x = 3?

o A 3

o B 1

o C 2

o D 4



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13) The value of the expression 26 – 14 % 3 + 1 is ____.

o A 1

o B 25

o C 24

o D 0

14) Suppose that x is an int variable, ch is a char variable, and the input is: 276.

**Choose the values after the following statement executes: cin >> ch >> x;

o A ch = '2', x = 76

o B ch = '2', x = 276

o C ch = ' ', x = 276

o D Input Failure

1. char ch1, ch2;

2. cin >> ch1;

3. cin.get(ch2);

4. cout << ch1 << ch2;

15) If the input is: M N

**what is the output?

o A MN B M C M N D None of these E N

16) What is the output of the following C++ code?

1. x = 6;

2. if (x > 10)

3. cout << "One ";

4. cout << "Two ";

o A One

o B Two

o C One Two

o D Two One



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1. int x = 1;

2. while (--x)

3. cout<< x;

o A 0

o B 1

o C No output

o D Infinite loop

18) Which of the following operators has the highest precedence?

o A * B ! C % D =

19) If the input is: 35 62&1.78 **what are the values of x,z,ch?

1. int x;

2. double z;

3. char ch;

4. cin>>x>>ch>>z;

o A x = 35, ch = '6', z= 2.0 (or 2)

o B x = 35, ch = 6, z= 2.0

o C Input Failure

o D x = 35, ch = 62, z= 78


1. int n = 0;

2. cout << ((n) ? n++ : ++n);

o A 1

o B 0

o C None of these

o D 2



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21) After the execution of the following code, what is the value of sum?

1. int sum = 0;

2. int num = 10;

3. if (num > 0)

4. sum = sum + 10;

5. else if (num > 5)

6. sum = num + 15;

o A 20

o B 10

o C 25

o D 0

22) Assume you have three int variables: x = 2, y = 6, and z. Choose the value of z in the following expression:

z = (y / x > 0) ? x : y;

o A 2

o B 3

o C 6

o D 4


1. cout << static_cast<int>(7.5 + static_cast<double> (19 / 2));

o A 16

o B 16.5

o C None of these

o D 17

o E 17.5



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24) Which of the following is a reserved word in C++?

o A Char

o B include

o C void

o D duble

25) Which of these is an invalid identifier?

o A None of these

o B pop_

o C _D3

o D 1b

o E _sum3

26) Which of the following is a legal identifier?

o A 1program

o B program_1

o C program 1

o D program!


1. cout<<"Welcome\rHi";

o A Syntax Error B Hilcome C Hi D HiWelcome

Welcome



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1. int i = 4, j = 6, k = 7, n = 3;

2. cout << i + j*k - k%n << endl;

3. cout << i / k << endl;

o A 45

0.66667

o B None of these

o C 0

0

o D 45

0


1. int x = 5;

2. if (x-- == 4)

3. cout << "One" << endl;

4. cout << x << endl;

5. cout << "Two";

o A 5

Two

o B One

Two

o C One

5 Two

o D 4

Two

o E One

4 Two



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30) The conditional operator ? : takes ____ arguments.

o A 1

o B 2

o C 3

o D 4


1. if (15 % 5)

2. cout << "Two";

3. else cout << "One";

o A One

o B None of these

o C Two

o D Two

One

32) Which of the following is the new line character?

o A '\r'

o B '/n'

o C '\n'

o D '/r'

33) Which of the following expressions correctly determines that x is greater than 10 and less than 20?

o A 10 < x < 20

o B (10 < x < 20)

o C 10 < x && x < 20

o D 10 < x || x < 20



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1. if (1 == 4 >= 1)

2. cout << "One";

3. else

4. cout << "Two";

o A OneTwo

o B One

o C Two

o D None of thes

35) Which of these will cause a syntax error?

o A float f = 1000;

o B char ch = ' ';

o C bool b = 111;

o D None of these

36) What is the output of the following code fragment?

1. int x = 10;

2. if (x > 15)

3. x = 0;

4. cout << x << endl;

5. else

6. cout << x + 5;

o A 5

o B 10

o C 0

o D None of these



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37) Suppose x and y are int variables. Consider the following statements:

1. if (x > 5)

2. y = 1;

3. else if (x < 5)

4. {

5. if (x < 3)

6. y = 2;

7. else

8. y = 3;

9. }

10. else

11. y = 4;


o A 1

o B 3

o C 2

o D 4


1. int n = 1;

2. cout << ((n) ? n++ : ++n);

o A 3

o B 1

o C 2

o D None of these



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39) Which of these is a valid use of c?

1. const int c = 9;

o A c = c+1;

o B cout<< c*3;

o C c = 20;

o D None of these

o E cin>>c;

40) Which of the following is a relational operator?

o A ==

o B &&

o C =

o D !

41) Suppose that x and y are int variables, z is a double variable, and the input is:

28

32.6 12

**Choose the values of x, y, and z after the following statement executes:

cin >> x >> y >> z;

o A x = 28, y = 12, z = 32.6

o B x = 28, y = 32, z = 0.6

o C x = 28, y = 12, z = 0.6

o D x = 28, y = 32, z = 12.0



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42) Suppose that alpha and beta are int variables. The statement alpha = beta-- ; is equivalent to

the statement(s)

o A alpha = beta - 1;

beta--;

o B alpha = 1 - beta;

beta--;

o C None of these

o D alpha = beta;

beta = beta - 1;

43) Consider the following statement:

int y = !(12 < 5 || 3 <= 5 && 3 > x) ? 7 : 9;


o A 3

o B 2

o C 7

o D 9

44) Which of the following will cause a semantic error, if you are trying to compare x to 5?

o A if (x = 5)

o B if (x >= 5)

o C if (x == 5)

o D if (x <= 5)



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45) What is the value of x after the following statements execute?

1. int x;

2. x = (5 <= 3 && 'A' < 'F') ? 3 : 4;

o A 2

o B 3

o C 5

o D 4

46) In a ____ control structure, the computer executes particular statements depending on some condition(s).

o A repetition

o B looping

o C selection

o D sequence


1. int x = 55, y = 5;

2. switch (x % 7)

3. { case 0: case 1: y++;

4. case 2: case 3: y = y + 2;

5. case 4: break;

6. case 5: case 6: y = y – 3;}

7. cout << y << endl;

o A 2 B 5

o C 8 D None of these

48) Consider the following statement:

int y = !(12 < 5 || 3 <= 5 && 3 > x) ? 7 : 9;


o A 2

o B 3

o C 7

o D 9



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49) A(n) ____ statement causes an immediate exit from the switch structure.

o A break

o B endl

o C default

o D exit

50) After the execution of the following code, what is the value of sum?

1. int sum = 0;

2. int num = 10;

3. if (num > 0)

4. sum = sum + 10;

5. else if (num > 5)

6. sum = num + 15;

o A 20

o B 10

o C 25

o D 0

51) Consider the following code.

1. const int LASTVAL = -99;

2. int entry;

3. cin >> entry;

4. while (entry != LASTVAL)

5. {

6. triple = entry * 3;

7. cout << triple << endl;

8. cin >> entry;

9. }

**This code is an example of a(n) ____ while loop.

o A EOF-controlled

o B counter-controlled

o C sentinel-controlled

o D None of answers.



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52) Assume all variables are properly declared. What is the output of the following C++ code?

1. num = 100;

2. while (num <= 150)

3. num = num + 5;

4. cout << num << endl;

o A 160

o B 150

o C 145

o D 155


1. int x = 5;

2. cout<< (x++)+x<<endl;

o A 10 B 12

o C None of these D 11

54) What is the output of the following program segment?

1. int x = 14, y = 60;

2. while (((y - x) % 3) != 0)

3. {

4. cout << y << " ";

5. y = y - 5;

6. }

o A 60 55 B 46 27

o C 60 55 50 D 60 55 50 45



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55) Which of the following is true about a while loop?

o A It cannot contain if statement.

o B The body of the loop may not execute at all.

o C The body of the loop is executed at least once.

o D The logical expression controlling the loop is evaluated before the loop is entered and after the

loop exits.


1. count = 1;

2. num = 25;

3. while (count < 25)

4. { num = num - 1;

5. count++;}

6. cout << count << " " << num << endl;

o A 25 1

o B 24 1

o C 24 0

o D 25 0

57) In ____ structures, the computer repeats particular statements a certain number of times depending on some

condition(s).

o A looping

o B branching

o C sequence

o D selection 58) What is the output of the following C++ code?

1. num = 0;

2. while (num < 5)

3. { cout << num << " ";

4. num = num + 1; }

o A 0 1 2 3 4 5 B 0 1 2 3 4

o C 1 2 3 4 5 D 1 2 3 4 0



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59) Suppose sum and num are int variables, and the input is 18 25 61 6 -A What is the

output of the following code?

1. sum = 0;

2. cin >> num;

3. while (num != -1)

4. {

5. sum = sum + num;

6. cin >> num;

7. }

8. cout << sum << endl;

o A 110

o B 92

o C 109

o D 111

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c++ final exam 2017/2018 · c++ final exam 2017/2018 page 4 of 18 #nashama_bau @nashamabau 13) the...

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